Merge pull request #26813 from sturkmen72:fix_animation

sturkmen72 · web-flow · commit db962ea06963 · 2025-01-22T10:40:08.000+03:00
Added CV_WRAP to Animation struct #26813 closes #26808 ### Pull Request Readiness Checklist See details at https://github.com/opencv/opencv/wiki/How_to_contribute#making-a-good-pull-request - [x] I agree to contribute to the project under Apache 2 License. - [x] To the best of my knowledge, the proposed patch is not based on a code under GPL or another license that is incompatible with OpenCV - [x] The PR is proposed to the proper branch - [x] There is a reference to the original bug report and related work - [ ] There is accuracy test, performance test and test data in opencv_extra repository, if applicable Patch to opencv_extra has the same branch name. - [ ] The feature is well documented and sample code can be built with the project CMake
diff --git a/modules/imgcodecs/include/opencv2/imgcodecs.hpp b/modules/imgcodecs/include/opencv2/imgcodecs.hpp
@@ -267,7 +267,7 @@ struct CV_EXPORTS_W_SIMPLE Animation
     - Defaults to `Scalar()`, indicating an empty color (usually transparent if supported).
     - This background color provides a solid fill behind frames that have transparency, ensuring a consistent display appearance.
     */
-    Animation(int loopCount = 0, Scalar bgColor = Scalar());
+    CV_WRAP Animation(int loopCount = 0, Scalar bgColor = Scalar());
 };
 
 /** @brief Loads an image from a file.
diff --git a/modules/imgcodecs/misc/java/test/ImgcodecsTest.java b/modules/imgcodecs/misc/java/test/ImgcodecsTest.java
@@ -1,13 +1,46 @@
 package org.opencv.test.imgcodecs;
 
+import org.opencv.core.Mat;
 import org.opencv.core.MatOfByte;
 import org.opencv.core.MatOfInt;
+import org.opencv.imgproc.Imgproc;
 import org.opencv.imgcodecs.Imgcodecs;
+import org.opencv.imgcodecs.Animation;
 import org.opencv.test.OpenCVTestCase;
 import org.opencv.test.OpenCVTestRunner;
 
+import java.util.ArrayList;
+import java.util.List;
+
 public class ImgcodecsTest extends OpenCVTestCase {
 
+    public void testAnimation() {
+        Mat src = Imgcodecs.imread(OpenCVTestRunner.LENA_PATH, Imgcodecs.IMREAD_REDUCED_COLOR_4);
+        assertFalse(src.empty());
+
+        Mat rgb = new Mat();
+        Imgproc.cvtColor(src, rgb, Imgproc.COLOR_BGR2RGB);
+
+        Animation animation = new Animation();
+        List<Mat> frames = new ArrayList<>();
+        MatOfInt durations = new MatOfInt(100, 100);
+
+        frames.add(src);
+        frames.add(rgb);
+
+        animation.set_frames(frames);
+        animation.set_durations(durations);
+
+        String filename = OpenCVTestRunner.getTempFileName("png");
+        assertTrue(Imgcodecs.imwriteanimation(filename, animation));
+
+        Animation readAnimation = new Animation();
+        assertTrue(Imgcodecs.imreadanimation(filename, readAnimation));
+
+        List<Mat> readFrames = readAnimation.get_frames();
+        assertTrue(readFrames.size() == 2);
+    }
+
     public void testImdecode() {
         fail("Not yet implemented");
     }
